/*
 * Copyright (c) 2011, Marc-Andre Ferland - madrang@gmail.com
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the The Warrent Team nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *     * This software is free for non-commercial use. You may not use this
 *       software, in whole or in part, in support of any commercial product
 *       without the express consent of the author.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE WARRENT TEAM BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
using System;
using System.Runtime.InteropServices;

namespace OsHelper.UsbNet.Descriptors
{
	[Obsolete]
	public class DescriptorBase
	{
		
		public DescriptorBase (byte[] Data)
		{
			this.Memory = Data;
		}
		
		public byte[] Memory {
			get;
			protected set;
		}
		
		public int MemorySize {
			get {
				return this.Memory.Length;
			}
		}
		
		protected void CheckMemoryLimit(int Offset, int Size)
		{
			if(this.MemorySize < (Offset + Size))
				throw new IndexOutOfRangeException();
		}
		
		#region Read
		
		protected byte ReadByte(int Offset)
		{
			this.CheckMemoryLimit(Offset, 1);
			return this.Memory[Offset];
		}
		
		protected void ReadByteArray (int Offset, byte[] Data, int DataOffset, int Length)
		{
			this.CheckMemoryLimit(Offset, Length);
			Array.Copy(this.Memory, Offset, Data, DataOffset, Length);
		}
		
		protected void ReadByteArray (int Offset, byte[] Data)
		{
			this.ReadByteArray(Offset, Data, 0, Data.Length);
		}
		
		protected Int16 ReadInt16(int Offset)
		{
			this.CheckMemoryLimit(Offset, 2);
			return BitConverter.ToInt16(this.Memory, Offset);
		}
		
		protected Int32 ReadInt32(int Offset)
		{
			this.CheckMemoryLimit(Offset, 4);
			return BitConverter.ToInt32(this.Memory, Offset);
		}
		
		protected Int64 ReadInt64(int Offset)
		{
			this.CheckMemoryLimit(Offset, 8);
			return BitConverter.ToInt64(this.Memory, Offset);
		}
		
		#endregion
		
		#region Write
		
		protected void Write (int Offset, byte Value)
		{
			this.CheckMemoryLimit(Offset, 1);
			this.Memory[Offset] = Value;
		}
		
		protected void Write (int Offset, byte[] Data, int DataOffset, int Length)
		{
			this.CheckMemoryLimit(Offset, Length);
			Array.Copy(Data, DataOffset, this.Memory, Offset, Length);
		}
		
		protected void Write (int Offset, byte[] Data)
		{
			this.Write(Offset, Data, 0, Data.Length);
		}
		
		protected void Write (int Offset, Int16 Value)
		{
			this.Write(Offset, BitConverter.GetBytes(Value));
		}
		
		protected void Write (int Offset, Int32 Value)
		{
			this.Write(Offset, BitConverter.GetBytes(Value));
		}
		
		protected void Write (int Offset, Int64 Value)
		{
			this.Write(Offset, BitConverter.GetBytes(Value));
		}
		
		#endregion
		
		public byte this[int index] {
			get{
				return this.ReadByte(index);
			}
			set{
				this.Write(index, value);
			}
		}
		
		public DescriptorBase Copy()
		{
			byte[] TempData = new byte[this.MemorySize];
			this.ReadByteArray(0, TempData);
			return new DescriptorBase(TempData);
		}
		
	}
}
